DeFi Protocol Data

get_chain_tvl

Get blockchain ecosystem TVL data. Returns all chains ranked by TVL, or TVL history for a specific chain.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "get_chain_tvl"
  }
}

Input Schema

Name	Required	Description	Default
`chain`	No	Chain name for history (e.g. Ethereum, BSC, Solana). Omit for all chains.
`limit`	No	History data points (default 10, max 30)

Schema Changelog

Changes observed during successful MCP inspections.

First observedJun 12, 2026

TDQS

A3.9/5.0

Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden. It correctly implies a read operation but does not explicitly state that the tool is non-destructive or read-only. A brief note on safety would enhance transparency, but the current description is not misleading.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is two sentences, front-loaded with the main purpose, and contains no unnecessary words or filler. It efficiently conveys the tool's functionality without being overly terse.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's simplicity (two optional params, no output schema), the description covers the main use cases. However, it lacks details about the return format (e.g., structure of ranked list or historical data points), which would improve completeness for an agent.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so the baseline is 3. The description's parameter info ('Omit for all chains' and history mode) largely repeats the schema descriptions. It adds no significant new meaning beyond clarifying the two modes, which is already evident from the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool retrieves blockchain ecosystem TVL data, specifying two modes: all chains ranked by TVL or history for a specific chain. The verb 'Get' and resource 'blockchain ecosystem TVL data' are precise, and the tool is well-differentiated from siblings like get_defi_protocols and get_yield_pools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage for chain-level TVL queries but does not explicitly contrast with sibling tools. Although the context makes the purpose clear, explicit guidance on when to use this versus get_defi_protocols or get_yield_pools would improve clarity.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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